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(No Model.) 1&Sheets-Sheet 1. A. BRBDENBERG. PAPER BAG MACHINE Patented May 27,- 1890. .40.

FIG. I.

-INVENTOR:

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(No Model.) 13 Sheets-Sheet 2.

A. BRE-DENBERG.

PAPER BAG MACHINE. v

No. 429,007. Patented May'Z'Y, 1890..

WITNE SES [NVEN R3 3 73mm Z W 7 By his Allomeys,

114: mama Inns c0, mom-umm, wnsmuanm a c 13 Sheets-Sheet 3.

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A. BRBDENBERG. PAPER BAG MACHINE.

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13 Sheets-Sheet 4.

(No Model.)

A. BRBDENBERG. PAPER BAG MACHINE.

- BIO-P429307. Patented May 27, 1890.

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(No Model.) 13 Sheets-8heet 5. A. BREIDENBERG; PAPER BAG MACHINE.

No. 429.007. Patented May 27, 1890.

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By his Azzomeys,

* c-ms m WITNESSES:

fi/w ie mom-mum, msnmawn n c 13 Sheets-Sheet 6.

Patented May 27, 1890.

A. BREDENBE RG.

PAPER BAG MACHINE.

(No Model.)

INVENTOR:

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%m 7km (No Model.) 13 Sheets-Sheet 7. A. BREDENBERG.

PAPER BAG MACHINE. No. 429,007. 1 Patented May 27, 1890.

. (J INVENTOR: WITNESSES: z @Mwmbw Xfifi? [W I By his Alzoriys,

(No Model.) Q 13 Sheets-Sheet 9. A. BREDENBERG.

Y PAPER BAG MACHINE. No. 429,007. Patented May 27, 1890.

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(No Model.) 13 Sheets-Sheet 10. A. BREDENBERG.

PAPER BAG MAGHINE.

No. 429,007. Patented May 27, 1890.

INVENTOR:

23/udmum By his Attorneys,

- mix-11m kg WITNESSES:

(NOM0de1.) 13 Sheets-Sheet 11.

A. BREDENBERG.

PAPER BAG MACHINE.

No. 429,007. Patented May 27, 1890.

summin INVENTOR: WlTNES/%3St a I 6W 1 By Ms Attorneys, 4709M v mhm 1 6.,

(No Model.) 13 Sheets-Sheet 12. A. BREDENBERG.

PAPER BAG MACHINE.

No. 429,007. Patented May 27, 1890.

'wlm g INVENTOR:

m I 5 21 936W By his Altomeys, W3

I flbmm Q (No Model.) 13 Sheets-Sheet 13. A. BREDENBBRG. PAPER BAG MACHINE.

No. 429,007. Patented May 27, 1890.

FIG. 24.

INVENTOR:

ud 1 his Attorneys,

65 .dmm ro WITNESSES:

a. Q JBwA-Ul NlTED STATES PATENT FFICE.

ALFRED BREDENBERG, OF BROOKLYN, ASSIGNOR, BY MESNE ASSIGNMENTS, TO ELLS A. BINGHAM, OF NEW YORK, N. Y.

PAPER-BAG MACHIN E.

SPECIFICATION forming part of Letters Patent No. 429,007, dated May 27, 1890.

Application filed February 18, 1889. Serial No. 300,371. (No model.)

To aZZ whom it may concern. proved bag-bottoming machine in its pre- Be it known that I, ALFRED BREDENBERG, a ferred construction. Fig. (i is an elevation of citizen of the United States, residing atBrookthe left-hand side of the machine. Fig. 7 is lyn, in the county of Kings and State of New an elevation of the rear or feeding end of the 55 York, have invented certain new and useful machine. Fig. 8 is an elevation of the right- Improvements in Paper-Bag Machines, of hand side of the machine on a larger scale, which the following is a specification. some of the parts being broken away to In the manufacture of paper bagsitisusual show those behind them. Fig. 9 is a plan to first form the paper into a tube by overof the machine on the same scale as Fig. 8, 6o 10 lapping the edges of the paper and pasting the upper portion of the machine being in them together. Subsequentlythe end portion horizontal section on the lines 9 9 in Figs. of the tube thus formed is folded and pasted 0 and 7. Fig. 10 is a horizontal section cut in to form the satchel-bottom. This bottoming the plane of the lines 10 10 in Figs. (3, S, and 11. operation is sometimes performedin the same Fig. 11 is a vertical longitudinal section in I 5 machine which makes the tube and somethe plane of the lines 11 11 in Figs. 7 and 10. times in a. different machine. In the latter All the preceding views show the machine case the tube-forming machine delivers the in one position-namely, at the commencef'lat tubes or blanks cut to the proper length, 'ment of the bag-bottoming operation. Fig. after which they are fed into the bottoming- 2'is a vertical longitudinal section similar 20 machine, which forms the satchel-bottom. to Fig. 11, but in a slightly-different plane, My invention, although applicable to a maas denoted by the line 12 12 in Fig. 10, and chine which both forms the tubes and hot showing the machine in a different position toms them, has been by preference embodied namely, during the feeding movement and in a machine for bottoming the blanks albefore the blank reaches the bottoming posi- 25 ready prepared for it by the tube-forming tion. Fig. 13 is a vertical transverse section machine. of the lower portion of the machine cut in My invention relates to bag-machines or the plane of the line 13 13 in Fig. 11. Fig. 11 bag-bottoming machines of that general class is a vertical transverse section of the upper in which the blank being operated upon travportion of the machine cut in the same plane o els longitudinally, its forward or advancing as Fig. 13, but showing the machine in a difend being the one that is folded and pasted ferent position-namely, at the instant when to form the bottom. It belongs also to the the paste is being applied; Fig. 15 is a fraggeneral class of machines in which the botmentary elevation showing the pasting mechtoming operations are performed while the anism alone, viewed from the right, as in Fig. 5 blank is held stationary. The blank thus fed 8, the plan of the section being denoted by into the machine is grasped and carried to the lines 15 15 in Figs. 7 and 14, the parts the bottoming mechanisms,is held stationary being in the position shown in Figs. 6 to 11. during their action upon it, and when the Fig. 1G is a vertical longitudinal section of bottom is completed is again carried forward the upper part of the machine on the same 40 and is delivered out of the machine in time scale as Fig. 6 and looking in the same directo make room for the next following blank. tion, all the parts except the carrying-chains In the accompanying drawings, Figures 1 and their appurtenances being omitted. to 5 show the blank in the successive stages Figs. 17 and 18 are fragmentary detail views of the bottoming operation, Fig. 1 being a of one of the grippers and the means for op- 5 plan of the blank as it is fed to the machine, crating it, the former view being a section Fig. 2 a plan thereof after the diamond fold longitudinally of the machine, and the latter has been made and the paste applied, Fig. 3 view a vertical section in transverse direca longitudinal section of Fig.2, Fig.4 a simition. Fig. 19 is a fragmentary plan of the lar view showing the turning up of the botchain-grippers. Figs. 20 to 24:, inclusive, are 50 tom folds, and Fig. 5 a plan of the finished fragmentary longitudinal sections in the bag. The remaining views illustratemy imsame plane as Fig. 11 and on a somewhat larger scale, showing the successive operations performed in bottoming the bag. Fig. 25 is a plan on the same scale as Fig. 2, showing one of the bottoming operations.

Before describing my improved machine I will briefly explain the operations performed in the making of a satchel-bottom bag of the character designed to be made by my maehine, referring for this purpose to Figs. 1 to 5.

The blank shown in Fig. 1 consists of a fiat tube formed by bending a sheet or strip of paper and pasting its edges together to form a seam a on one side. On the opposite side of the flat tube is formed a projecting lip l) at its front end, or end on which the bottom is to be formed, with a corresponding notch I) at'the other end, as shown in dotted lines. The front end is slitted at a a, whereby it is divided. into four flaps, being two side flaps c c and between them two bottom flaps dd, on the latter of which the ear I) is formed. The blank in this condition is delivered from the blank-forming machine and is fed to the bottomilag-machine.

The process of forming the bottom consists, first, in making what is called a middle crease on the line .r .1; in Fig. l by laying the edge of a blade or plate along this line. Then the bottom of the b.-tg is opened by lifting the flap (1 away from the flap (6 and carrying it toward the right in Fig. 1, thereby bending the paper along the fold it ."c, and by the same movement drawing in the side flaps c e and forming the diamond fold, as shown in Fig. 2.

Fig. 3 is a longitudinal section show ing the flap (1 still lying extended, the flap (Z thus opened back and the edge or end of one of the side llaps c laid down upon these flaps. Paste is then applied in the manner shown by the stippled surface in Fig. 2.

The next operation consists in creasing the paper along the lines 1 3 in Fig. 2 and turning up the flaps (Z (Z on these creases in the manner indicated in the sectional view, Fig. 4. The flap (t is folded down on the flaps c c, and the flap (7 is folded down upon the side llaps and over the flap (7, whereby the bottom laps are formed, as shown in Fig. 5, which represents the completed bag. The flap (l is folded down slightly in advance of the flap (1 in order to fold under it. As these bottom flaps are folded down, they are pressed or squeezed for an instant to cause the opposite surfaces to adhere. The completed bag is then passed out of the machine.

Referring now to Figs. 6 to 24, inclusive, I will proceed to describe the portions of my machine which act directly upon the bag, ignoring for the present the mechanisms by which these parts are given their relative movements.

The bag-blanks lie on a feeding table I with their slitted ends turned toward the bottoming-machine or toward the left in Figs. 6 and 11. The apparatus being in the position shown in Figs. 0 to 11, inclusive, the attendant feeds one of the blanks into the machine by thrusting its end under a guide-plate b and in between two gripper bars or plates (1 and U, which are standing at rest in the position shown at the right in Fig. 11 and somewhat separated from one another, so that the blank can be easily slipped in between them. The blank is pushed through between them until its advancing end encounters a step c, which gages the extent of its feed. The parts pause in this position for a moment. Presently and before the attendant feeds in the next blank the gripperplates C C commence to move toward the left in Fig. 11, and instantly thereafter the upper plate 0 closes down upon the lower one C, thereby gripping the blank tightly between them and earryiug it along with them. Simultaneously therewith the stop-linger c lifts and permits the end of the blank to be moved forward. The grippers continue to move to the left, being carried by chains 1) l) until they reach the second position in Fig. 'l l, where they stand directly over the table E. In mak ing this movement the advancing end of the blank is supported by a cross bar or rod 0, extending across from one of the chains l) to the other. The chains travel or slide along on ledges 6 until the advancing edge of the blank passes over the table E, whereupon the. chains are lifted adjacent to the ends of this table by chain-lifters F F. This lifting of the chains raises the rod (2., and thereby lifts the advancing edge of the blank up in the manner shown in Fig. 12, in which figure the machine is shown during the period of travel of the grippers. The blank having been carried under the first bottom-lap folder G is thus by the lifting of its advancing-edge carried over the second bottonrlap folder (1", as clearly shown in Fig. 12. After the advancing end of the blank has arrived over the folder G, and while it is still advancing, an opener II moves from the position shown in Fig. 12 forwardly in the same direction as the blank, but at a more rapid speed, so that it rides over the advancing portion of the blank and presses it down flat upon the surface of the folder G, the opener tinallystopping in the 'iosition-shown in dotted lines in Fig. 11. Before the opener reaches this position, however, and at the instant of the stoppage of the feeding movement of the blank, a holding-clip or gripper finger I moves down from the position shown in Fig. 12 to that shown in Fig. 1], so that its end presses upon the ear I) of the blank, thereby gripping the lattcr against the surface of the folder G. The parts then come to rest with the grippers U (1" in the position shown in Fig. 11, and the opener If in the position shown in that figure in dotted. lines. During the feeding or blank-forwarding operation just described the table E has been depressed in the position shown in Fig. 1;. The table new begins to rise in order that its higher or left-hand surface shall be brought up flush with the upper surfaces of the folders G G; but before it reaches this position the opener H begins to execute its return movement, moving in the direction of the arrow upon it in Fig. 11. The advancing end of the opener is brought to an edge to enable it to enter under the flap d of the blank. It is shown in Fig-11 at the instant of so entering. In order to insure that it shall pass beneath the flap (Z instead of over it, I provide means for lifting this flap, consisting of a finger J, (shown best in Figs. 20 and 21,) which strikes an upwardblow through an opening formed in the folder G an instant before the opener commences its return movement. This upward blow bulges up the lower flap d and lifts the upper flap cl above it in the man ner shown in Fig. 11, so that when the opener H, which immediately thereafter commences its movement, reaches the end of the blank it is forced to enter under the flap (1. Durin this movement of the opener the table E continues to rise, and by the time the opener reaches the table the latter has fully risen, so that its upper surface is flush with that of the folder G, as shown in Fig. 20. Theright-hand portion of the table E is recessed or made of a lower level in order to enable the gripperplates C C to drop into it, as shown in Fig, 20, in order to bring the uppersurface of the plate 0 on a level with the surfaces of the folders G G. Thus these folders, the table E, and the plate .0 form together a level and practically continuous surface, over which the opener H slides. This movement of the opener 11 toward the right from the position shown in dotted lines in Fig. 11 folds the flap (1 back over the advancing edge 0; of the plate 0 in the manner shown in Fig. 21. Thus the plate C serves not only as agripper for feeding along the blank, but also in part as a table on which to fold the bottom of the bag and as a blade for determining the position of the middle fold :1; LC in Figs. 1 and 2. The action of the opener not only lays back the flap (Z, but also draws in the side flaps c c in the manner well understood, thereby forming the so-called diamond fold. Two side-folders or side-fiap holders K K are provided on opposite sides, as best shown in Figs. 9 and 13. These side-folders are normally elevated in the position shown in Fig. 13 but during orimmediately after the backward movement of the opener H they move downwardly and inwardly to the position shown in Fig. 14, where they bear upon the side flaps c cand press the latter fiat upon the table. The side-folders are shown thus moving down in Fig 2 The next operation is that of applying paste to the blank, and which is performed by a paster L, which is shown in Figs. 6, 7, and 15 turned up out of action and in Fig. 14 as being down in the act of applying paste to the blank. This paster consists of a platen having the shape indicated by the stippling in Fig. 2, to which paste is applied, and which then moves down and presses its pasted face against the blank while the latter is opened out on the table formed by the combination of the folders G G, table E, and plate C. The outlines of the bag thus opened out are shown by light dotted lines in Fig. 9, while the outlines of the paster are shown therein in heavy dotted lines. After the paste has been thus applied the next operation is the folding down of the bottom laps d cl. An important preliminary to this is the operation of forming the creases or folds on the lines y in Fig. 2. This creasing is performed in part simultaneously with the pasting and in part subsequently thereto.

I have stated that during the pasting the opened blank is supported on the table formed by the flush surfaces of the folders G G, table E, and plate 0. Just previous to the paster coming in contact with the blank a plunger M, carried by the paster and moving in advance of it, comes down upon the portion of the blank which is resting on the plate 7, as shown in Fig. 25. The right-hand edge y of this plunger coincides with the position of the crease or fold on the line 1 y. This plunger M acts first to flatten the paper and hold it flat during the pasting operation, thereby preventing any buckling of the paper on or near the seam a, where some buckling or bellying is apt to occur. The paster rises in advance of the plunger M, which remains pressed down upon the table, and immediately after or simultaneously with the rising of the paster the bottom-lap folders G vG commence to turn up until the position shown in Fig. 22 is reached, whereupon the plunger M begins to reascend with the paster. Until this instant the plunger remains down upon the table and continues to press down the blank, and its edge y serves, by reason of the rising angular movement of the folder G, to determine the line of the fold y of the bottom lap d, this fold being started against the edge 1 of the plunger. The positions of the bottom folds y y are determined also by the side edges 11 3 Fig. 25, of the side-folders K K. The table E remains stationary until the plunger M begins to lift, and immediately thereafter the table commences to descend, the side-folders K K descending with it, and thereby pressing down the portions of the blank on which they rest, and holding these portions against the table so that they are pressed down into the gap or space between the two bottom-folders G G, whereby the paper is creased between the pivoted edges of these folders and the side edges 1 3 of the side-folders. The table E continues to move down until its upper surface reaches the position shown in Fig. 23, where it pauses. The side-folders K K continue to move down with the plunger until it reaches this position, when they also pause. The functions of the side-folders are, first, to flatten down ITO the diamond fold formed by the turning in 1 of the side flaps c 0; second, by reason of their edges f 1 to break the creases on the lines 1 g in the corners :uljacent to the diamond fold, where the paper is more refractory than at any other place, except on the scam (I, and, third, to hold the paper down firmly upon the table both while the latter is resting in its upper position, while it is descending, and during its pause, in order to prevent the lifting of the side flaps during the operation of. folding over the bottom laps. As soon as the pastor commences to rise the bot-ton1lap folders G G commenceto turn up on their pivotal axes y 5 which are adjacent to the creases on the lines 1 y. They are shown in Fig. 22 at the beginning of this movement. These folders swing through an arc of one hundred and eighty degrees, carrying the flaps (Z and d with them, the folder G moving sufficiently in advance of the folder (1" to bring the flap (Z down first, so that the flap (Z shall be folded over it. Just before the folder G commences to move, the clip I lifts in order to release the paper, and moves up somewhat farther than the folder 1} in order to get out of its way. The side-folders K K remain down against the table until the folders G Ji' have swung up beyond the perpendicular and carried the bottom flaps sufficiently inward so that their folds form acute angles, so that there is no longer any possibility of these folds escaping upwardly from between the folders G G, whereupon the side-folders K K quickly move outwardly and upwardly to their original posit-ion. When thebottom-folders G Jr have reached the end of their swinging movement, their active faces lie both in the same plane or flush with each other and parallel with the upper surfaces of the table L and plate C, against which they press with a sufficient pressure to squeeze the bottom laps of the lug tightly to their places this position being maintained for a moment during a resting or dwelling of the parts in order to cause the paste to set and hold the laps down. At the end of this momentary dwell the table E descends lower to the position shown in Fi 2i, whereupon the chains D D are again set in motion, carrying the gripper-plates (7 O, and with them the bag, from the intermediate or bottoming position shown in Fig. 11 to the third position shown at the left-hand end of the machine in Fig, 11. Upon arriving in this position the chains again stop and the gripper-plates are opened or separated, leaving a gap between them, through which the bag can be freely drawn. Upon the instant of reaching this position the advancing edge of the bag-bottom is gripped between two delivery-rollers N and N, which are revolving at a rapid speed, and which draw the bag between them and pass it out of the machine. The upper roller N may be made heavy in order to give the bag-bottom a further squeeze during its delivery. The rollers U N move rapidly enough to draw the finished bag beyond the table E before the latter begins to move up into the position for forming the bag-bottom on the next successive blank.

The various operations performed upon the blank and the several active elements or tools which perform these operations being new understood, I will now proceed to describe the particular mechanisms for imparting the proper relative motions to these parts. It is to be well understood, however, that my invention is not limited to the particular mechanisms for driving the essential parts or tools which I have adopted in this my preferred construction, since such driving mechanisms are susceptible of considerable variation without departing from the principles introduced by my invention.

The frame of the machine consists, generally, of two side frames P P, formed with legs and spaced apartby crossframes I" P, (shown in Figs. 11 and 12, but omitted in the other figures for the sake of clearness,) and of. upper frames 1 P of inverted-U shape, which are erected upon the frames 1 P.

The machine driven by a pulley 0, Figs. fl, 7, and 8, on a shaft 0', on which is fixed a pinion, which meshes with a gear Q on the main driving-shaft Q. This shaft drives all the operative parts of the machine and exccutes one revolution to the bottoming of each bag.

I will now describe the mechanism for supporting and moving the carrying-chains l.) l) and operating the grippers. Referring to Figs. (3 and lfi, each of these chains is carried over four sprocket-wheelsff; which are fixed on transverse shafts f, which shafts have hearings in the upper frames P The chains are preferably Vaucauson chains. The grippers ()O are applied to the chains at uniform intervals, as shown in Fig. 16. The lower plate 0 of each gripper has its opposite ends fastened to links of the chain, as are also the ends of the cross-bars c e. The upper plate or blade (J of each gripper is fastened to the plate U through the medium of studs 72 fixed, preferably, to the plate (1, near opposite ends thereof, and working through coinciding holes in the plate 0, the two plates being drawn together through the medi um of springs 72. applied on these studs, allas best shown in Fig. l3. Each plate U is formed with a projecting end or finger 71?, which extends over and projects beyond the chain 1). Each of the sprocket-wheelsf is formed with a deep notch f on one side, into which the fingers 7/ of the gripper-plates may enter. The sprocket-wheels are made of such diameter that d u 1'- ing the revolution these n'ojecting fingers coincide with and enter the notches. The chief function of these fingers h is to cause the grippers to open when they reach the feeding and delivery positions. This may best be understood by reference to Figs. 17 and 18, which showin detail the construction of the sprocket-wheel and its accessories at the fcedin g position.

A cam-plate '1' is applied to or formed intogrally with the upper frame P its cam-face being so shaped eccentrically to the axis of the sprocket-Wheel f that as the plate 0 passes around this wheel its finger h rides on this cam-face and is pressed thereby inwardly and upwardly, thereby lifting the plate C awayfrom the plate 0, as shown in Fig. 18. When the position shown in Figs. 17 and 18 is reached the chain stops, and while it is thus stopped the blank is fed in between the gripper-plates. \Vhen the chain starts again, the finger 7L2 slips off the end of the cam i. whereupon the two gripper-springs h draw the plate 0 down tightly against-the plate 0. At the delivery end of the machine the plate 0 is again forced away from the plate 0 by a similar cam t", which is shown in dotted lines in Fig. 12 and in full lines in the plan view, Fig. 9. It will be understood that the cams i t" are duplicated on the opposite side of the machine in order to lift simultaneously both ends of the plate C.

The intermittent movement of the carrierchains is imparted to them in the following manner: On the main shaft Q, is fixed a toothed sectorj, which at each revolutioi'i of this shaft comes into mesh, as shown in Fig. 12, with a pinion j, having as many teeth as the sector, and to which the sector imparts one complete revolution. The pinion j is fixed 011 a shaftj on which is also fixed a gear which meshes, as shown in Fig. 9, with a gear j, fixed on one of the sprocket-wheel shafts f. Thus at each revolution of the driving-shaft the sprocket-wheels are turned one revolution, carrying the chain forward the distance from one pair of grippers to the next, and then leaving the chain at rest during the remainder of the revolution of the main shaft.

To prevent the momentum of the parts carrying the chain too far,I provideon each side of themachinea spring-stop 70, (shown bestin Fig. 16,) the turned-down end of which lies in the path of the projecting finger b on the gripper-plate O and stops the latter, and consequently the chains, in the correct position. The finger 71 is caused to strike this stop (which is arranged above the line of the direct travel of the chain, as shown in Fig. 16) by reason of the lifting of the chain by the chain-lifter F at this point, as shown in Fig. 8. By this lifting movement, also, the stop It is sprung upwardly, and being a stiff springbar it exerts a downward pressure on the finger 71 which serves the useful purpose of steadying the plate 0 and holding it firmly during the operations of forming the bottom of the bag. Before the chain is started on again the lifter F descends, thereby lowering the finger 7L2 beneath the stop It, so that when it starts forward it clears the stop.

To prevent any rebound of the chain when it stops, a pawl It, Figs. 16 and let, is provided, which drops in behind'the finger ]L2 as soon as the latter has passed under it.

The feed stop or gage c is mounted on a le- 13, the upper ver 0 and drawn upwardly by a spring 0 (or by counterweighting the tail of the lever, if preferred.) The stop is thrown down during the time that the gripper is in the feeding position by the lifting movement of the gripperplate C, which, as it comes to place, enters under the tail of the lever and lifts it, thereby throwing down the end bearing the stop. Then the gripper starts on again and its plate (J is dropped by running off the cam 1i, thestop-lever c tilts back and lifts the stop out of the'way.

In the lower part of the machine are mounted three transverse shafts R, S, andT, which are driven from the shaft Q through a train of equal-sized gears ll, (shown in dotted lines in Fig. 11 and in full lines in plan in Fig. 10,) and from these shafts, which rotate synchronously with the shaft Q, all the remaining parts of the machine are driven.

The chain-lifters F F consist of levers arranged close against and pivoted to the side frames, with their free ends tied together by a cross-bar m, extending transversely from one to the other (see Fig. 13) and connecting by a rod on to a guiding-fork m which straddles and is guided by the shaft T, and which carries a roller F which rides on the periphery of a cam F, Fig. 11, fixed on the shaft T, whereby this cam serves to raise and lower the lifters F F in proper time.

The opener H is constructed of the shape shown in side view in Fig. 12 and front view in Fig. 13 and in plan in Fig. E). It has abottom plate n, supported by two side arms 01,

which are fixed to a carrier-frame H which frame slides on longitudinal rods or ways U U,

'mounted fixedly on the frame-work of the machine.

The opener is operated by the cam H, fixed on the shaft T, as best shown in Fig. 12. The periphery of this cam acts on a roller 11*, carried on an arm U, which is fixed on a rock shaft U extending through tothe righ t-hand side of the machine, as shown in Fig. 13, and to which is fixed a long arm U Figs. 12 and end of which is connected by a link U, Figs. 8, 12, and 13, to the sliding frame ll.

To the arm U is connected a spring 11, Fig. 8, which imparts motion to the opener during'its retractile stroke, while its rearward or active stroke toward the right in Fig. 11 is imparted to it by the rising face M, Fig. 12, of the cam H. This cam has the greater portion of its cam-face concentric for the purpose of holding the opener H stationary in its extreme position toward the right.

By preference the opener H is made with its bottom plate in two parts, the portion a being fixed rigidly to the arms a, as described, while the portion a Fig. 12, is hinged thereto and is pressed down by a spring a, Fig. 13, acting through a rod or. Thus the tail of the opener is given a yielding motion, causing it to press down the paper upon the table without liability of tearing or injuring it.

The clip or gripperI is mounted on a crossshaft 1", Figs. 12 and 9, on one end of which is an arm 0, Fig. 8, which connects by a 10d 0 to a fork 0 which embraces the shaft T, and carries a roller 1 which is acted upon by the clip operating cam I, all as best shown in Fig. 8. A spring 0 acts to press down the clip I, while the cam 1 acts to lift it up.

The finger J is mounted on a lever .I, Fig.

2, which is fulerumed beneath a crossbar p, extending across the machine and supporting the free edge of the hinged folder it. The folder G is similarly supported by a cross-bar p. The tail of the lever .l enters freely a hole or opening out in the clip T, as shown in Fig. 20, and when the opener If is making its retractile stroke toward the left in Fig. 12 its plate n? encounters this tail and presses it down with a quick motion, thereby throwing the finger J up and causing it to strike a blow upon the blank, which by this time is held by the gripper I, so that its lower flap cannot escape, but is bulged up by the opener, thereby lifting up the free edge of its upper flap, as shown in Fig. 11. The opener ll makes the return movement instantly and before the flap has had time to settle back to place, so that it enters with certainty under it.

The movement of the table E up and down is imparted to it by a cam E, carried by the shaft S and acting upon a roller PP, mounted at the lower end of a vertical post or pillar E, which slides freely through a vertical open ing in a cross-frame 1"", and on the upper end of which pillar the table E is mounted, all as clearly shown in Figs. 11, 1.2, and 13. The cam E is formed with concentric surfaces at three different radial distances in order to cause the table to pause at three different elevations. The portion of greatest radius lifts the table to its upper position on a level with the folders G l and holds it there during the opening and pasting operations. The portion of next smaller radius causes the table to pause during its downward motion in the position shown in Fig. 23, where the folded-down laps are beingpressed. The con centric portion of the smallest radius causes the table to pause in its lowest position, Fig. 2-1, during the time that the finished bag is being fed out and the next blank fed in over the table, as shown in Fig. 12.

The side-folders K K consist of flat plates, the width of which between their edges 11 p is equal to the width of the bottom of the finished bag or the width of the laps between the folds 3 1 in Fig. 2. Each folder is pivoted on a longitudinal horizontal axis to a lever 01' dog which lever is pivoted to the end of an e1bow-lever q, a spring if intervening and serving to throw down the side-folder with a yielding pressure. The elbow-lever q is pivoted at 011 a bracket q, fixed to the side frame of the machine, as shown in Figs. 8 and 13, and its short arm q projeets toward the middle of the machine and is forked or slotted both vertically and transversely. Into the 'crtical fork projects a block or arm r on the upper end of a post or pillar 2', which slides 'ertieally in a hole formed in the crossframe I. This block 1' carries a pin 1- which projects to both sides and enters the transverse forks in the arm (f. The lower end of the post r carries a cross-pin r which is grasped by a similar doubly-bifurcated end P of a lover K, which is fulcrumed loosely on the shaft Q, as shown in Figs. il 0 and ll. This lever K carries a roller K which rides on the cam K, fixed on the shaft R, by which cam the grippers K K are operated. thus communicated to the gri 'ipers from this cam through the roller to the lcverK", which, as shown in Fig. 10, has two arms extending to the opposite sides of the machine, thence to the vertically-sliding posts 0' r. thence to the two elbow-levers (1 (1, and from them through the dogs (I q to the side folders K K. The lovers q are retracted against; the action of the cam by a spring K", Fig. 13, which extends across from one lever to the other. The side-folders K K are thus moved down obliquely, turning around the centers q until they strike the table, when they are pressed down flat upon it, and by the continued motion of the levers q they are pushed ilatwise over the surface of the table toward each other, the springs being compressed during this movement. \Vhen the table descends to make the side creases g y, Fig. 2, the sidcfolders K K follow it verticallydownward by reason of the tension of these springs until, when the folders G G have turned up far enough to confine the folds 1 11 the cam K, by lifting the lever K, causes the folders K K to move outwardly and upwardly to their original positions.

I will now describe thepasting mechanism. The pastor L consists of a rectangular plate with an open space out into it from one end nearly to the other, as shown in Figs. 6 and 15. This plate is mounted rigidly on two rods Z Z, which extend back from it, as shown in Fig. 7, and pass through holes in guideheads Z 1*, which are mounted to oscillate in bearings Z, Fig. 1b, which are fixedly attached to the top frames P F The rods 1 are free to slide through the holes in the heads I". Blocks Z are fixed to the rods Z, and through these blocks passes a rod .9, the ends of which are fixed in the ends of lever-arms SS', which are fixed to a rock-shaft As this shaft oscillates the arm i" moves froin the position shown in dotted lines in Fig. Ll down to that shown in full lines and back again, 'the axis of the rod .5 traversing the dotted arc. During this movement the paster L is moved from its position in a vertical plane (shown in Fig. 7) down to its position in a horizontal plane with its pasted face against the blank, as shown in Fig. 14', its rods Z meanwhile sliding freely in the heads 1 This oscillatory motion is imparted to the shaft in order to work the paster by means of a cam L, fixed on the shaft S and working against a roller I),

Motion is IOO mounted on an upright frame L L Fig. 15, the upper part L thereof being formed of T shape and having fixed to each of its arms a rack S, which rack meshes with toothed segments S S fixed on the shaft S The cam L imparts an up-and-down reciprocating movement to the frame, and hence a corresponding oscillatory movement to the shaft 5 whereby the paster is brought from its upper position down upon the blank and immediately returned, after which the parts remain at rest for something more than half a revolution of the shaft S, during which time the paster, which stands as shown in Fig. 7, receives a fresh coating of paste. The downward movement of the frame L L is preferably assisted by a spring 3.

The paste is placed in a vessel V, Fig. 14, in which turns a roller V, driven by a belt z, Figs. 6 and 7. During about one-third of each revolution of the power-shaft a roller rests in contact with the roller V and receives paste therefrom. Subsequently this roller V is lifted bodily and again lowered, gears v c on its opposite ends coming in mesh with racks r, fixed to the frame, imparting to it a rotary motion as it ascends and descends. This roller thus rolls up and down across the face of the paster L and in contact therewith, thereby spreading the paste in a uniform coating upon the face of the paster. The up-and-down movements of the roller V are imparted by a cam V Figs. 6, 13, and 15, acting against a roller o carried on a vertically-sliding frame 12 which carries a T-head a to the opposite arms of which are fixed two vertical rods '0 o, the forked upper ends of which engage the journals of the roller V The pasting mechanism as thus far described not new with me.

It is sometimes desirable in the operation of the machine to be able to throw the pasting mechanism out of action-as, for example, in case the operator should miss the feed so that durin g one cycle of operations the machine would have no blank to operate upon, in which case if the paster were to come down as usual it would smear the table E, plate 0, and folders G G with paste. To avoid this I have devised means for arresting the operation of the paster, which I will now describe.

On the left-hand side of the machine, adj acent to the feed-table B and in position where the operator can conveniently reach it, is placed a throw-off lever WV, Figs. 6, 7, and 15. This lever is connected by a rod to to a crank formed on an oscillatory sleeve to, which is interposed between the sections L and L of the vertically-sliding frame, through which the motion is communicated between the cam L and the oscillating shaft S This sleeve in turns freely on a vertical stud or pin 10 Fig. 14, on whiclrthe tubular portion 10 of the section L of this frame slides freely. The lower end of this tubular portion 10 and the upper end of the sleeve to are formed with reeiprocally-inclined notches or cam-faces, as

shown best in Fig. 15, which when the sleeve w is oscillated in one direction close into one another, thereby shortening the frame L L and when the sleeve is oscillated in the opposite direction to the proper extent the inclines lift up the section L thereby lengthening the frame. These oscillatory motions are communicated to the sleeve from the le ver W through the rod 10. hen the lever is in the position shown in full lines in Fig. 15, the frame L L is of its normal length and the paster L comes fully down and pastes the blank. W'hen however, the lever \V is thrown over to the position shown in dotted lines in Fig. 15, the frame L L is shortened, so that the paster comes down a proportionately less distance, so that in its lowest position it stands sufficiently above the surfaces of the parts G, E, O, and G, forming the table on which the pasting is done, so that no paste can be applied to these parts even if the blank be not fed in. The two sections of the frame L L are drawn together by springs of.

The plunger M is mounted on a rod M, extending parallel with and between the pasterrods Z and sliding in guides 5 carried by one of these rods. The plunger thus moves with the paster and has a movement independently thereof parallel with the axes of the rods Z. This latter movement is imparted to it by a spring M which tends to press the plunger beyond the face of the paster until it is arrested by the abutting of a collar 3 on its rod M against the stop or guide 8 To prevent the plunger projecting thus beyond the paster when the latter is in its upper position, where it receives paste,and in order to draw the plunger back, so that it shall not project as far as the paster, to prevent paste being applied to it, the plunger is provided with an arm M projecting from its rod M, which arm, as the paster moves upwardly and outwardly, encounters a stop'bar M, Fig. let, on the frame, and is arrested thereby, as shown in Fig. 7, while the paster continues to move outwardly to its paste-receiving position. Upon the paster being carried down the paster M upon the release of its arm M moves with the paster and projects beyond its pasted face, and as the paster comes down toward the blank the plunger, being in advance of it, encounters the blank first in the position shown in Fig.- 25 and presses down the portion of the blank in which the seam a is formed, thereby holding the blank flat during the pasting, and when the paster lifts again the plunger remains down and continues to hold down the blank, thereby preventing its being pulled up by adherence to the paster. The plunger continues down after the lifting of the paster and during the ascent of the folder G long enough to cause its edge 11 to determine the folding of the paper on the line g 1 after which by the continued ascent of the paster and upon the abutting of the stops 8 s the plunger is caused to move upward again with the paster.

IIO 

